TM 9-1270 Ordnance Maintenance: U.S. Rifles, cal. .30, M1903, M1903A1, M1903A3 and M1903A4 1944
"This Technical Manual is published for the information and guidance of ordnance maintenance personnel. It contains detailed instructions for disassembly, assembly, inspection, maintenance, and repair of the materiel listed below. Additional descriptive matter and illustrations are included to aid in providing a complete working knowledge of the materiel. These instructions are supplementary to those in Field Manuals and Technical Manuals prepared for the using arms."
Digitized by AHEC (U.S. Army Heritage Collections) http://www.carlisle.army.mil/ahec/